Updated: 8:05 p.m.

VOORHEES, N.J. -- Michael Raffl will miss six to eight weeks with a left knee injury, which essentially costs him the rest of the regular season. 

Replays of the second period's final minutes during Tuesday's 4-0 Flyers rout of Colorado showed Raffl falling hard to the ice on his knees. He got up, skated into the play, then hobbled slowly to the bench favoring his left knee.

That general manager Ron Hextall said it would require six to eight weeks but not surgery means Raffl likely suffered an MCL sprain or tear. If it had been an ACL, he would miss much longer time and require surgery.

Playing throughout the top three lines this season, Raffl has eight goals and 11 points averaging 13:16 ice time. Last season, Raffl was the only Flyer to play in all 82 regular-season games.

Jordan Weal was sent down -- on paper -- to the Phantoms earlier Wednesday so he can qualify for the AHL playoffs. Newly acquired center Valtteri Filppula -- who came over for Mark Streit in a trade Wednesday with Tampa Bay (see story) -- would fill the roster void left by Raffl. If Weal does not return Thursday, the Flyers will be without an extra forward.

Rookie winger Travis Konecny, who has missed the last eight games with a knee and ankle injury, is ahead of schedule but will not return Thursday vs. Florida. Hextall said Konecny is likely out Saturday at Washington (see story).